Abstract Serum glucocorticoid level (GC level) included endoguous GC(Hydrocortisone HC)and exogeuous GC (Dexamethasone,Predisone and Methylprednisolone) were measured by high-performence liquid chromatography(HPLC) in 72 cases (75 times of transplantation) of allo transplantation. There was no positive correlation between the blood trough level of exogeuous GC and the dosage of glucocorticoid agents (P>0.05); There was no positive correlation between the dosage of glucocorticoid agent and the endogeuous GC level or adrenalcortical function resi...